If I miss the fajr prayer, because of sleep, and wake up after sunrise, is it possible for me to pray the missed Fajr prayer? Also, if I miss the Magrib prayer, because of some work, is it possible for me to make the magrib prayer after the azan for Isha is called out?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.

Whenever you wake up, it is an obligation on you to perform the Fajr prayer. You should know that you missed so many rewards by neglecting the Fajr prayer. You missed the presence of the angels in this prayer, missed the reward of congregational prayer, and missed your name to be taken up by the angels to Allaah as one of those who performed the Fajr prayer. Therefore, you should endeavour to perform the Fajr prayer on time and in congregation.

Likewise, you should endeavour to perform the Maghrib and 'Isha prayers on time because among the best deeds to Allaah is to perform the prayer on time, as confirmed in many authentic narrations.

Allaah Knows best.